Short-term accumulation and elimination of carbon-14 in the common carp Cyprinus carpio under laboratory conditions

This study examined the short term transfer of carbon-14 (14C) in common carp Cyprinus carpio under laboratory conditions. Various experiments were achieved order to investigate direct or trophic for 4 days, using waterborne 14C-labelled arginine food pellets respectively. Radiolabelled was prepared with glucose test how kinetics might vary biochemical form 14C. Elimination fish fed 5 days on radiolabelled and then placed starvation days. In all experiments, water, activities monitored every day. Different fractions (whole body, muscle) sampled elucidate role muscle as a potential storage. Results suggested that water-to-fish absorption rate 20% d−1 per fish. Carps incorporated 14.3% absorbed Fish activity did not increase over due strong decrease 14C concentration water (resulting from aquarium sorption). During entirely ingested sources rapidly assimilated. For either glucose, results 19–20% incorporated, yielding significant No difference mass-specific observed among whole body. Total represented 29%–32% body activity, this proportion reflecting contribution weight. elimination showed total arginine. The great variability an essential amino-acid like can be used energy source muscles act storage amino-acids.